I don't know what movie this is but it stars Fernando Poe Junior (FPJ) (rip sir.). He is very famous for his action films over here. It's a car chase scene along Makati, Philippines in the early 80s. FPJ is driving a Toyota Crown while the baddies are in a Plymouth Valiant (probably with an Isuzu Diesel engine). There are a lot of old school stuff in this chase.

Valliant was a part of Chrysler... so if that car was built in Australia was a Valliant not a Rambler

Ramblers are not Chrysler products, they were built by American Motors Corporation, or AMC. Which eventually was purchased by Chrysler in the '80s- however that doesn't make it a Chrysler product.

A Chrysler VC Valiant is different than a US Plymouth Valiant- but neither is similar with the AMC Rambler American.

The Rambler American has nothing in common with the Valiant. Look at the picture I posted with the one you posted. Trust me, the car in the clip is a Rambler American, not a Valiant, and they don't share a single part between them. I wouldn't lie to you, I heart your R30.